Mazda CX 7. Manual - part 348

ON-BOARD DIAGNOSTIC [AUDIO]

09-02G–1

09-02G

09-02G ON-BOARD DIAGNOSTIC [AUDIO]

STARTING PROCEDURE FOR 

ON-BOARD DIAGNOSTIC 
TEST MODE[AUDIO]  . . . . . . . . . . . . . .  09-02G–1

SUPPLIER IDENTIFICATION 

PROCEDURE[AUDIO]  . . . . . . . . . . . . .  09-02G–2

Identification Using the Label or

 Inscribed Lettering  . . . . . . . . . . . . . .  09-02G–2

Identification Using the On-board 

Diagnostic Test Mode. . . . . . . . . . . . .  09-02G–2

MEMORY CLEARING PROCEDURE

[AUDIO] . . . . . . . . . . . . . . . . . . . . . . . . .  09-02G–2

DTC TABLE[AUDIO] . . . . . . . . . . . . . . . .  09-02G–3

DTC 16:ER12[AUDIO]  . . . . . . . . . . . . . . . 09-02G–4
DTC 17:ER11[AUDIO]  . . . . . . . . . . . . . . . 09-02G–4
DIAGNOSTIC ASSIST FUNCTION

[AUDIO]  . . . . . . . . . . . . . . . . . . . . . . . . . 09-02G–5

Structural View  . . . . . . . . . . . . . . . . . . . 09-02G–5
Button Inspection  . . . . . . . . . . . . . . . . . 09-02G–5
Speaker Inspection . . . . . . . . . . . . . . . . 09-02G–5
Radio Reception

 Condition Inspection. . . . . . . . . . . . . . 09-02G–6

Antenna control 

condition inspection. . . . . . . . . . . . . . . 09-02G–6

End of Toc

WM: AUDIO UNIT

STARTING PROCEDURE FOR ON-BOARD DIAGNOSTIC TEST MODE[AUDIO]

id0902f6803700

Note

• All DTCs displayed in the on-board diagnostic test mode should be entered in the Audio Repair Order 

Form.

1. Turn the ignition switch to the ACC or ON position.
2. Turn the POWER switch off.
3. While pressing the POWER button, 

simultaneously press the FM/AM button and the 
MEDIA button for 2 s or more.

Note

• If several DTCs are in the memory, they can 

be displayed using the SEEK button (up or 
down).

4. To stop the on-board diagnostic test mode, turn 

the ignition switch off.

End Of Sie

SEEK 
BUTTON

POWER BUTTON

FM/AM BUTTON

MEDIA BUTTON

acxuuw00001842

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ON-BOARD DIAGNOSTIC [AUDIO]

09-02G–2

SUPPLIER IDENTIFICATION PROCEDURE[AUDIO]

id0902f6803800

Note

• The supplier can vary with the module. When asking the supplier (service center) for repair or 

replacement, identify the supplier and fill in the Audio Repair Order Form with the following procedures.

Identification Using the Label or Inscribed Lettering

1. Remove the audio unit.
2. Verify the supplier by referring to the label attached to each unit.

Identification Using the On-board Diagnostic Test Mode.

1. Start the on-board diagnostic test mode.
2. Identify the device and supplier codes by referring 

to the information display.

Note

• If no DTC is stored, no codes will be 

displayed.

End Of Sie

MEMORY CLEARING PROCEDURE[AUDIO]

id0902f6803900

1. Start the on-board diagnostic test mode.
2. While pressing the POWER button, 

simultaneously press the AUDIO CONT button for 
2 s or more.

Caution

• Before clearing the memory, be sure to 

enter all of the DTCs displayed in the on-
board diagnostic test mode in the Audio 
Repair Order Form.

3. To stop the on-board diagnostic test mode, turn 

the ignition switch off.

End Of Sie

Supplier code

Supplier name

1

SANYO Automedia

2

Panasonic

3

Clarion

4

Pioneer

Part 

number

Part name

00

Cassette deck

03

CD player

05

CD changer (external)

06

CD changer

09

Base unit

10

MP3 applicable CD player system

16

CAN system

17

CAN system

21

Audio cover

22

MP3 applicable CD changer

SUPPLIER CODE

PART NUMBER

acxuuw00001843

AUDIO CONT BUTTON

POWER BUTTON

acxuuw00001845

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ON-BOARD DIAGNOSTIC [AUDIO]

09-02G–3

09-02G

DTC TABLE[AUDIO]

id0902f6804000

Screen display

Detection condition

Possible cause/inspection

DTC

(When starting on-board 
diagnostic test function)

00: Er01

Cassette deck cannot implement 
insert and eject commands.

Cassette deck malfunction

00: Er03

Reel built into cassette deck does 
not operate.

Verify condition of the cassette deck.

00: Er04

Cassette tape is worn out.

• Tape wear

• Verify condition of the cassette deck.

00: Er10

Cassette deck does not operate.

• Malfunction of connectors between base unit and 

cassette deck

• Cassette deck malfunction

03: Er01

CD player cannot implement 
insert and eject commands.

CD player malfunction

03: Er02

Cannot change tracks.

CD player malfunction

03: Er07

CD reading error.

• Defective CD (scratches or dirt)

• CD player malfunction

03: Er10

CD player does not operate.

• Malfunction of connectors between base unit and CD 

player

• CD player malfunction

05: Er01

CD changer (external) cannot 
implement insert, eject, and disc 
change commands.

• Defective CD (curved, broken or foreign material stuck/

attached, etc.)

• CD changer (external) malfunction

05: Er07

CD reading error.

• Defective CD (curved, broken or foreign material stuck/

attached, etc.)

• CD changer (external) malfunction

05: Er10

CD changer (external) does not 
operate.

• Malfunction of connectors between base unit and CD 

changer (external)

• CD changer (external) malfunction

06: Er01

CD changer cannot implement 
insert, eject, and disc change 
commands.

• Defective CD (curved, broken or foreign material stuck/

attached, etc.)

• CD changer malfunction

06: Er02

Cannot change tracks.

• Defective CD (curved, broken or foreign material stuck/

attached, etc.)

• CD changer malfunction

06: Er07

CD reading error.

• Defective CD (curved, broken or foreign material stuck/

attached, etc.)

• CD changer malfunction

06: Er10

CD changer does not operate.

• Malfunction of connectors between base unit and CD 

changer

• CD changer malfunction

09: Er20

Audio system does not operate.

Voltage at base unit is low.

09: Er21

Broken sound/No sound

Inspect the audio system operation according to vehicle 
condition.

09: Er22

No radio reception

Inspect the radio operation according to vehicle condition.

10: Er01

MP3 applicable CD player cannot 
implement insert and eject 
commands.

MP3 applicable CD player malfunction

10: Er02

Cannot change tracks.

MP3 applicable CD player malfunction

10: Er07

MP3 CD reading error.

Incorrect format CD

10: Er10

MP3 applicable CD player does 
not operate.

• Malfunction of connectors between base unit and MP3 

applicable CD player

• MP3 applicable CD player malfunction

16: Er12

— 

CAN system

17: Er11

— 

CAN system

21: Er17

Incorrect combination (base unit 
and audio cover)

Install the correct base unit or the audio cover.

21: Er18

21: Er19

Communication error between 
base unit and audio cover

Malfunction of connectors between base unit and audio 
cover

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ON-BOARD DIAGNOSTIC [AUDIO]

09-02G–4

End Of Sie

DTC 16:ER12[AUDIO]

id0902f6804100

Diagnostic procedure

End Of Sie

DTC 17:ER11[AUDIO]

id0902f6804200

Diagnostic procedure

End Of Sie

22: Er01

MP3 applicable CD changer 
cannot implement insert, eject, 
and disc change commands.

• Defective CD (curved, broken or foreign material stuck/

attached, etc.)

• MP3 applicable CD changer malfunction

22: Er02

Cannot change tracks.

• Defective CD (curved, broken or foreign material stuck/

attached, etc.)

• MP3 applicable CD changer malfunction

22: Er07

CD reading error.

• Defective CD (curved, broken or foreign material stuck/

attached, etc.)

• MP3 applicable CD changer malfunction

22: Er10

MP3 applicable CD changer does 
not operate.

• Malfunction of connectors between base unit and MP3 

applicable CD changer

• MP3 applicable CD changer malfunction

no Err

No DTCs stored

No DTCs stored

Screen display

Detection condition

Possible cause/inspection

DTC

(When starting on-board 
diagnostic test function)

DTC 16:Er12

CAN system communication error

DETECTION 

CONDITION

• CAN system communication error

POSSIBLE 

CAUSE

• Malfunction of wiring harness between base unit and other CAN system related module

• Audio unit malfunction

ACTION

(See09-02D-2 MULTIPLEX COMMUNICATION SYSTEM[MULTIPLEX COMMUNICATION SYSTEM].)

DTC 17:Er11

CAN system communication error

DETECTION 

CONDITION

• ALC function does not operate.

POSSIBLE 

CAUSE

• Malfunction of wiring harness between base unit and other CAN system related module

• CAN system related module malfunction

ACTION

(See09-02D-2 MULTIPLEX COMMUNICATION SYSTEM[MULTIPLEX COMMUNICATION SYSTEM].)

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